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A long term investigation of the wheel and the rail wear condition reveals that wheel flange wear and rail gauge corner wear are serious problems for EMU vehicles and narrow curved tracks. In order to solve the problem, the effects of bogie key parameters on the vehicle dynamic behaviour were studied using an EMU vehicle dynamic model and the improved parallel inverse design method was employed to...
The important published papers on railway wheel profile wear in the past are reviewed and have been highlighted. A wheel profile wear prediction methodology is developed to improve an extant model and used to predict the wear of the wheels of railway vehicle operating on sharp curved tracks. The methodology includes the coupling dynamics of railway vehicle and track, the three-dimensional contact...
The finite element code ANSYS/LS-DYNA is used to simulate the wheel/rail contact-impact behavior at rail joint region. The implicit and explicit finite element methods have been couple to analyze wheel/rail impact process. In the FE simulation, a material model with linear kinematic hardening was used. The influences of axle load and train speed on contact forces, the stresses and strains in the railhead...
The adhesion test under the conditions of different wheel/rail contacts, such as various speeds, axle-loads, contamination situation, was carried out. In order to simulate track irregularities, the rollers of the test rig were excited with hydraulic system in the test. The test results showed that the adhesion coefficient of wheel/rail decreased with increasing in the axle-load and running speed under...
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